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5
6#include <linux/gpio.h>
7#include <linux/module.h>
8#include <linux/of.h>
9#include <linux/of_platform.h>
10#include <linux/i2c.h>
11#include <linux/of_gpio.h>
12#include <sound/soc.h>
13#include <sound/jack.h>
14
15#include "imx-audmux.h"
16
17#define DAI_NAME_SIZE 32
18#define MUX_PORT_MAX 7
19
20struct imx_es8328_data {
21 struct device *dev;
22 struct snd_soc_dai_link dai;
23 struct snd_soc_card card;
24 char codec_dai_name[DAI_NAME_SIZE];
25 char platform_name[DAI_NAME_SIZE];
26 int jack_gpio;
27};
28
29static struct snd_soc_jack_gpio headset_jack_gpios[] = {
30 {
31 .gpio = -1,
32 .name = "headset-gpio",
33 .report = SND_JACK_HEADSET,
34 .invert = 0,
35 .debounce_time = 200,
36 },
37};
38
39static struct snd_soc_jack headset_jack;
40
41static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)
42{
43 struct imx_es8328_data *data = container_of(rtd->card,
44 struct imx_es8328_data, card);
45 int ret = 0;
46
47
48 if (gpio_is_valid(data->jack_gpio)) {
49 ret = snd_soc_card_jack_new(rtd->card, "Headphone",
50 SND_JACK_HEADPHONE | SND_JACK_BTN_0,
51 &headset_jack, NULL, 0);
52 if (ret)
53 return ret;
54
55 headset_jack_gpios[0].gpio = data->jack_gpio;
56 ret = snd_soc_jack_add_gpios(&headset_jack,
57 ARRAY_SIZE(headset_jack_gpios),
58 headset_jack_gpios);
59 }
60
61 return ret;
62}
63
64static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {
65 SND_SOC_DAPM_MIC("Mic Jack", NULL),
66 SND_SOC_DAPM_HP("Headphone", NULL),
67 SND_SOC_DAPM_SPK("Speaker", NULL),
68 SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),
69};
70
71static int imx_es8328_probe(struct platform_device *pdev)
72{
73 struct device_node *np = pdev->dev.of_node;
74 struct device_node *ssi_np = NULL, *codec_np = NULL;
75 struct platform_device *ssi_pdev;
76 struct imx_es8328_data *data;
77 struct snd_soc_dai_link_component *comp;
78 u32 int_port, ext_port;
79 int ret;
80 struct device *dev = &pdev->dev;
81
82 ret = of_property_read_u32(np, "mux-int-port", &int_port);
83 if (ret) {
84 dev_err(dev, "mux-int-port missing or invalid\n");
85 goto fail;
86 }
87 if (int_port > MUX_PORT_MAX || int_port == 0) {
88 dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",
89 MUX_PORT_MAX);
90 ret = -EINVAL;
91 goto fail;
92 }
93
94 ret = of_property_read_u32(np, "mux-ext-port", &ext_port);
95 if (ret) {
96 dev_err(dev, "mux-ext-port missing or invalid\n");
97 goto fail;
98 }
99 if (ext_port > MUX_PORT_MAX || ext_port == 0) {
100 dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",
101 MUX_PORT_MAX);
102 ret = -EINVAL;
103 goto fail;
104 }
105
106
107
108
109
110 int_port--;
111 ext_port--;
112 ret = imx_audmux_v2_configure_port(int_port,
113 IMX_AUDMUX_V2_PTCR_SYN |
114 IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |
115 IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |
116 IMX_AUDMUX_V2_PTCR_TFSDIR |
117 IMX_AUDMUX_V2_PTCR_TCLKDIR,
118 IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));
119 if (ret) {
120 dev_err(dev, "audmux internal port setup failed\n");
121 return ret;
122 }
123 ret = imx_audmux_v2_configure_port(ext_port,
124 IMX_AUDMUX_V2_PTCR_SYN,
125 IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));
126 if (ret) {
127 dev_err(dev, "audmux external port setup failed\n");
128 return ret;
129 }
130
131 ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);
132 codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);
133 if (!ssi_np || !codec_np) {
134 dev_err(dev, "phandle missing or invalid\n");
135 ret = -EINVAL;
136 goto fail;
137 }
138
139 ssi_pdev = of_find_device_by_node(ssi_np);
140 if (!ssi_pdev) {
141 dev_err(dev, "failed to find SSI platform device\n");
142 ret = -EINVAL;
143 goto fail;
144 }
145
146 data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
147 if (!data) {
148 ret = -ENOMEM;
149 goto put_device;
150 }
151
152 comp = devm_kzalloc(dev, 3 * sizeof(*comp), GFP_KERNEL);
153 if (!comp) {
154 ret = -ENOMEM;
155 goto put_device;
156 }
157
158 data->dev = dev;
159
160 data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);
161
162 data->dai.cpus = &comp[0];
163 data->dai.codecs = &comp[1];
164 data->dai.platforms = &comp[2];
165
166 data->dai.num_cpus = 1;
167 data->dai.num_codecs = 1;
168 data->dai.num_platforms = 1;
169
170 data->dai.name = "hifi";
171 data->dai.stream_name = "hifi";
172 data->dai.codecs->dai_name = "es8328-hifi-analog";
173 data->dai.codecs->of_node = codec_np;
174 data->dai.cpus->of_node = ssi_np;
175 data->dai.platforms->of_node = ssi_np;
176 data->dai.init = &imx_es8328_dai_init;
177 data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
178 SND_SOC_DAIFMT_CBP_CFP;
179
180 data->card.dev = dev;
181 data->card.dapm_widgets = imx_es8328_dapm_widgets;
182 data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);
183 ret = snd_soc_of_parse_card_name(&data->card, "model");
184 if (ret) {
185 dev_err(dev, "Unable to parse card name\n");
186 goto put_device;
187 }
188 ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
189 if (ret) {
190 dev_err(dev, "Unable to parse routing: %d\n", ret);
191 goto put_device;
192 }
193 data->card.num_links = 1;
194 data->card.owner = THIS_MODULE;
195 data->card.dai_link = &data->dai;
196
197 ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
198 if (ret) {
199 dev_err(dev, "Unable to register: %d\n", ret);
200 goto put_device;
201 }
202
203 platform_set_drvdata(pdev, data);
204put_device:
205 put_device(&ssi_pdev->dev);
206fail:
207 of_node_put(ssi_np);
208 of_node_put(codec_np);
209
210 return ret;
211}
212
213static const struct of_device_id imx_es8328_dt_ids[] = {
214 { .compatible = "fsl,imx-audio-es8328", },
215 { }
216};
217MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);
218
219static struct platform_driver imx_es8328_driver = {
220 .driver = {
221 .name = "imx-es8328",
222 .of_match_table = imx_es8328_dt_ids,
223 },
224 .probe = imx_es8328_probe,
225};
226module_platform_driver(imx_es8328_driver);
227
228MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
229MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");
230MODULE_LICENSE("GPL v2");
231MODULE_ALIAS("platform:imx-audio-es8328");
232
